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path: root/drivers/acpi/arm64/iort.c
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Diffstat (limited to 'drivers/acpi/arm64/iort.c')
-rw-r--r--drivers/acpi/arm64/iort.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index 70f4e80b9246..2159ad9bf9ed 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -1435,8 +1435,14 @@ dev_put:
return ret;
}
-static bool __init iort_enable_acs(struct acpi_iort_node *iort_node)
+#ifdef CONFIG_PCI
+static void __init iort_enable_acs(struct acpi_iort_node *iort_node)
{
+ static bool acs_enabled __initdata;
+
+ if (acs_enabled)
+ return;
+
if (iort_node->type == ACPI_IORT_NODE_PCI_ROOT_COMPLEX) {
struct acpi_iort_node *parent;
struct acpi_iort_id_mapping *map;
@@ -1458,13 +1464,15 @@ static bool __init iort_enable_acs(struct acpi_iort_node *iort_node)
if ((parent->type == ACPI_IORT_NODE_SMMU) ||
(parent->type == ACPI_IORT_NODE_SMMU_V3)) {
pci_request_acs();
- return true;
+ acs_enabled = true;
+ return;
}
}
}
-
- return false;
}
+#else
+static inline void iort_enable_acs(struct acpi_iort_node *iort_node) { }
+#endif
static void __init iort_init_platform_devices(void)
{
@@ -1472,7 +1480,6 @@ static void __init iort_init_platform_devices(void)
struct acpi_table_iort *iort;
struct fwnode_handle *fwnode;
int i, ret;
- bool acs_enabled = false;
const struct iort_dev_config *ops;
/*
@@ -1493,8 +1500,7 @@ static void __init iort_init_platform_devices(void)
return;
}
- if (!acs_enabled)
- acs_enabled = iort_enable_acs(iort_node);
+ iort_enable_acs(iort_node);
ops = iort_get_dev_cfg(iort_node);
if (ops) {